Bewermeyer H, Dreesbach H A, Hünermann B, Heiss W D
J Comput Assist Tomogr. 1984 Oct;8(5):953-6. doi: 10.1097/00004728-198410000-00027.
Basilar impression was found in three members of one family. The mother showed an asymptomatic deformity, her eldest son complained of headache, drop-attacks, nystagmus, unilateral ophthalmoplegia, and ataxia; the middle son presented with headache, nystagmus, and hemiparesis. Magnetic resonance (MR) imaging demonstrated convexobasia of various degrees with elevation of the upper spine and malformation of the occipital bone. The medulla oblongata and the pons were flattened and dislocated backward in two cases. Chiari malformation was present in one case and mild hydrocephalus in another. A comparison of MR with CT imaging demonstrates some advantages of the former method in the assessment of the neural structures directly involved in basilar impression.
在一个家庭的三名成员中发现了颅底凹陷。母亲表现为无症状畸形，她的大儿子主诉头痛、猝倒、眼球震颤、单侧眼肌麻痹和共济失调；二儿子表现为头痛、眼球震颤和偏瘫。磁共振成像（MR）显示不同程度的颅底凹陷伴上颈椎抬高和枕骨畸形。两例中延髓和脑桥扁平并向后移位。一例存在Chiari畸形，另一例有轻度脑积水。MR与CT成像的比较显示了前一种方法在评估直接参与颅底凹陷的神经结构方面的一些优势。
